Preheat the oven to 220C, fan-forced. Line 2 oven trays with baking paper. Cut the unpeeled sweet potatoes into wedges and put on a lined tray. Drizzle with 1 tsp olive oil, season with salt and pepper and toss to combine. Roast, turning halfway, for 25 mins or until golden and tender.
Step 2 — Roast tomato and onion
Meanwhile, quarter the tomatoes. Cut the onion into wedges. Put on the remaining lined tray and drizzle with 1 tsp olive oil and 2 tsp balsamic vinegar. Scatter over 2 tsp sugar, season with salt and pepper and toss to coat. Roast for 5 mins.
Step 3 — Roast sausages
Add the sausages to the tray with the tomato and onion. Roast for a further 15 mins or until the onion is tender and the sausages are cooked through.
Step 4 — Make dressing
Combine 2 tsp olive oil and 2 tsp balsamic vinegar in a large bowl and season with salt and pepper. Add the salad leaves and toss to coat.
Step 5 — Serve up
Divide the salad among plates and top with the roasted tomato, onion and sausages. Crumble over the feta. Serve with the sweet potato wedges and enjoy!
Step 6 — Make it yours
If you have any bread rolls or a baguette on hand, this makes the ultimate sausage sub.